Wiper mechanism for linotype-machines.



Patented Oct. l6, I900.

w. c. PBITCHARD. WIPER MECHANISM FOR LINOTYPE MACHINES.

(Application filed May 23, 1900.)

(NoMqdoL) avwewtoz THE cams PETERS co PHOTO-LITHD., WASH rFIcE.

\VILLIAM O. PRITCHARD, OF BRISTOL, ENGLAND, ASSIGNOR TO THE MERGENTHALERLINOTYPE COMPANY, OF NEW YORK, N. Y.

WJIPER MECHANISM FOR LlNOTYPE-MAGHINES.

SPECIFICATION forming part of Letters Patent No. 659,800, dated October1900- Application filed May 23, 1900. Serial No. 17,696. (No model.)

To all 1071,0727, it may concern:

Be itkn own thatl, WILLIAM OAssIN PRITCH ARD, of Bristol, in the countyof Gloucester, England, have in vented certain new and usefulImprovements in the Wiper Mechanism of Linotype-lllachines; and I dohereby declare the following to be afnll, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

The present invention relates to improvements in the wiper mechanism oflinotypemachines, more especially in that of the Mergenthaler machinedescribed in the specification of Letters Patent No. 436,532, datedSeptember16, 1890. In that machine the linotype is cast in a slot in aso-called mold wheel while the said slot is held by the wheel in ahorizontal position against a row of formative cavitiesin thecomposedlineof matrices. This composed line is moved through a part of itstravel from the assembly-box in which the composition takes place to thecasting position by a lever worked automatically by the machine. Afterthe linotype has been cast the two sides of it must be trimmed, so as tobe practically truly parallel with each other. For that purpose themold-wheel is moved through an angle of two hundred and seventy degrees,so as to make it hold the slot in a vertical position to register withthe space between two parallel vertical knives set apart at a distanceequal to the trimmed thickness of the linotype. The wheel is moved up tothe knives and the linotype pushed between them by a reciprocatingejector. The act of trimming the sides of the linotype by the cuttingedges of the knives as it is so pushed between them leaves fragments ofmetal adhering thereto, and there are fragments sometimes left adheringto the face of the Wheel immediately adjacent to the slot in it. It isthe function of the wiper to remove all these fragments.

According to the present invention the wiper consists of one or morebrushes circular in cross-section and of the proper diameter, length,and stiffness and which are mounted vertieallyin a frame capable ofhorizontal reciprocating motion between the knives and mold-wheel.

Referring to the accompanying drawings, which are to be taken as part ofthis specification and read therewith, Figure 1 is afront elevation onthe line 1 l of Fig. 3 looking at it in the direction of the bottomarrow; Fig. 2, a rear elevation on the line 2 2 of Fig. 3 looking at itin the direction of the top arrow, and Fig. 3 a plan of both thepreceding figures.

O is the mold-wheel, and o the slot, which latter is formed forconvenience in a detachable block 0 fixed to the face of the said wheel.0 is the gearing by which the latter is turned by a suitably-drivenpinion, (not shown in the drawings,) and o is the wheeljournal.

The slot 0, it may be mentioned, extends through the wheel 0 from thefront to the rear face, that its length is parallel with a diameter ofthe said wheel 0, and that its width is parallel with the axis of thelatter. The full lines of Fig. 1 show the sloto in the abovementionedhorizontal or casting position, While the dotted lines on the right handof the said figure show it in the trimming position.

1 2 are the pair of tri 1n ming-knives fixed to the knife-block 2.

3 4 are the two brushes of the improved.

wiper. The number is indifferent. There may be only one; but two arepreferred, because experience has shown that they do the work of wipingperfectly under all circumstances, which one brush might not do. Theyare both of the same length, not much less than that of the mold-block 0of sufficient diameter to brush both knives and mold-face when themold-wheel O is in the trimming position, and stiff enough to do thattrimming well. The material of them is preferably bristles.

5 G are the spindles of the brushes 3 4. The ends of them project aboveand below the brushes proper for the purpose of entering the wiper-frame7, which holds them in a vertical position and reciprocates them overboth the knives 1 2 and the face of the mold o. The ends of the spindles5 6 are inserted in the respective journals in the frame 7 in anyconvenient way. It is preferred that the end of each frame should have adetachable capplate 8 8, to be held in position by a hold ing-screw Eachcap-plate is screwed up tight enough to prevent the spindles 5 6 turningin their journals.

10 is a slotted guide for the frame 7 to work through. It is fixed tothe frame A of the machine or to some fixed part of it.

11 is a cranked connecting-rod from the right-hand edge of the frame 7to the operating-lever 12, above mentioned, and to which it is connectedby a bolt and nut 13, passed through a compensating slot 14: in the saidlever 12.

The wheel 0 being in the normal position 11. e. with the slot 0registering with the space between the knives 1 2 and a short distanceto the rear of them-the machine rocks the lever 12 from its right-handposition (shown by the full lines of the three figures) over to theleftinto the position shown in dotted lines in Fig. 1. The object of thisthrow has been already explained. During this motion of the said leverthe improved wiper wipes both the knives 1 2 and the face of the mold.Before the lever 12 is rocked back again the mold-wheel O is turned upthrough a quarter of a circle into the casting position, so that onlythe knives 1 2 are wiped by the return motion of the said wiper.

My wiper is distinguishable from those heretofore in use, first, in thatit is movable transversely across the edge of the knives instead ofbeing movablelengthwise the knives; second, in that the wipers are ofthe full length of the knives, so that each knife may be wiped'from oneend to the other at one time, and, third, in that there are two wiping-'surfaces which act successively on each knife of the pair. I claim 1.An improved wiper for the trimmingknife of a linotype-machine,consisting of a vertical brush equal in length to the knife, a frame toguide the same transversely of the knife, and a connecting-rod from saidframe to a reciprocating member of the machine.

2. In a linotype-machine and in combination with a knife to trim theside of the slug,

one or more brushes lying parallel with the length of the knife, a frameto guide the same transversely of the knife, and a connectingrod fromsaid frame to a vibrating lever forming part of the machine,substantially as described and shown.

3. In a linotype-machine, in combination with aknife for trimmingtheside face of the slug, a wiper acting transversely past the edge of theknife, substantially as described.

4. In a linotype-machine, the combination of a knife for trimming theside face of the slug, a wiper having a length equal to that of theoperative portion of the knife, and means for reciprocating said wiperacross the edge of the knife.

5. In a linotype-machine, and in combination with a knife for trimmingthe side'face of the slug, a cylindrical wiper lying parallel with theedge of the knife and arranged to act across the same.

6. In a linotype-machine, the combination of a knife for trimming theside face of the slug, a cylindrical wiper lying parallel there with,and mechanism for moving said wiper across the edge of the knife.

7. In a linotype-machine, the combination of the two trimming-knives,the two cylindrical wipers, and mechanism substantially as shown forcarrying said Wipers across the edges of the knives.

8. In a linotype-machine, a slug-trimming knife, a wiper of cylindricalform lying parallel with the edge of the knife, means for reciprocatingsaid wiper across the edge of the knife, and means for permitting rotaryadj ustment of the wiper and securing the same against rotation.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

WILLIAM C. PRITCHARD.

Witnesses:

CHAs. S. WOODROFFE, ROBERT E. MOLAREN.

